A# Hirajoshi Scale

What is the A# Hirajoshi Scale?

The Hirajoshi scale is a five-note scale from Japanese traditional music with a haunting, otherworldly quality that immediately evokes Eastern atmosphere. Its distinctive pattern of a major 2nd, minor 2nd, major 3rd, and minor 2nd creates wide leaps and tight clusters that sound unlike anything in Western tonality. Here's how the A# Hirajoshi Scale lays out on the fretboard. This scale is enharmonically equivalent to Bb Hirajoshi.

Notes and Positions

Japanese pentatonic with hollow minor mood. On bass, this scale becomes a toolkit for strong roots, passing tones, and melodic fills that still support the groove. Think in root-on-E and root-on-A boxes, then adapt the same notes for 5-string bass when the low B string gives you another root below the pattern. In the key of A#, the notes are: A#, B#, C#, E#, F#.

How to Use It

You'll often hear it in Film, Ambient, and Metal. A good way to internalize the sound is to sing the root, then sing a few scale degrees before you play them.

Loop a simple drum groove and keep every note locked to the subdivision before adding fills. Use the interactive fretboard above to spot repeats of the same note on different strings and frets.